Transaction Details
The contract call From 0x16A2d891...26ceb3179 To 0xb2ecfE4E...e2410CEA5 produced 4 Internal Transactions
Type Trace Address | From | To | Value | Gas Limit | |
---|---|---|---|---|---|
call_0_1_1 | Blur.io: Marketplace 3 | cacboy.eth | 0.0412992 ETH | 262,931 | |
call_0_1_1 | Blur.io: Marketplace 3 | 0x4eC8043A...fBF894b84 | 0.011343 ETH | 253,522 | |
call_0_1_1 | Blur.io: Marketplace 3 | stackingcash.eth | 0.02088 ETH | 244,112 | |
call_0_1_1 | Blur.io: Marketplace 3 | 0x01e6e8De...3e79c3DBf | 0.000057 ETH | 234,575 |
AA Txn Hash | Method | Position | From | Internal Txns | Token Txns | NFT Txns | Txn Fee (ETH) | Gas Limit |
---|
Transaction Receipt Event Logs
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 237
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 2454
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 68
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 6809
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 6810
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 6830
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 78
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 9858
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 9950
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 9951
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xeBcDA23912Ff97415648F0cB5C0CDc0509b9c93a
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 9955
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0x4eC8043A6b95125B2fA835Eaf8CE475fBF894b84
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 3433
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0x4eC8043A6b95125B2fA835Eaf8CE475fBF894b84
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 5757
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0x4eC8043A6b95125B2fA835Eaf8CE475fBF894b84
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 6328
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7443
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7444
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7446
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7447
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7448
Data
- 0x
Name
Transfer (index_topic_1 address from, index_topic_2 address to, index_topic_3 uint256 tokenId)View Source
Topics
- 0 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
- 1: from 0xdc126d717918afEcfb0708AaAF85FDFBAEe16051
- 2: to 0x16A2d8919244355305f54a87316103E26ceb3179
- 3: tokenId 7450
Data
- 0x
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :88694034561678695464241853450496573706762551368993082
- collectionPriceSide :5407556058124341254169321738221226194638890859032901939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :918175134835381970302415994997953866644565689865193786
- collectionPriceSide :5553706221857431545989690221492854496604484113330501939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :25443166701271878970222781260201277182093102774077754
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :2547552157738299052205567086024192735353276924390132026
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :2547956993691839712313909506722855145749721617704536378
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :2555412113543864648099666503054540905432986529606256954
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :29218225430497601207942899183107436221864376532584762
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :3688322876252023332300698671146389297496656103012419898
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :3722776315850462037694432337392842953402025056780536122
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :3723121230236872130783128407013363996194663856860678458
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :F7D6F614DAFACD72CB4BFEA16D23D5E13D942033BA7DCE14489F4DD4B1176EC2
- tokenIdListingIndexTrader :3724619269415136306274287183966898186289811187717228858
- collectionPriceSide :5538945055320389426515833004682420038105959194646444339862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721MakerFeePacked (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide, uint256 makerFeeRecipientRate)View Source
Topics
- 0 0x7dc5c0699ac8dd5250cbe368a2fc3b4a2daadb120ad07f6cccea29f83482686e
Data
- orderHash :DDD7176D9FFC0D095EC0D09F8387BC89B757EFE4B3FEA7BE8ED2690C49505743
- tokenIdListingIndexTrader :1284439702228424191248426274250197974308271065169218436
- collectionPriceSide :5553706221857431545989690221492854496604484113330501939862357307
- makerFeeRecipientRate :73085940314428784406091487687239573883105985707455
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721MakerFeePacked (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide, uint256 makerFeeRecipientRate)View Source
Topics
- 0 0x7dc5c0699ac8dd5250cbe368a2fc3b4a2daadb120ad07f6cccea29f83482686e
Data
- orderHash :DDD7176D9FFC0D095EC0D09F8387BC89B757EFE4B3FEA7BE8ED2690C49505743
- tokenIdListingIndexTrader :2153958639856807551530790361789917840569548475680246660
- collectionPriceSide :5553706221857431545989690221492854496604484113330501939862357307
- makerFeeRecipientRate :73085940314428784406091487687239573883105985707455
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721MakerFeePacked (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide, uint256 makerFeeRecipientRate)View Source
Topics
- 0 0x7dc5c0699ac8dd5250cbe368a2fc3b4a2daadb120ad07f6cccea29f83482686e
Data
- orderHash :DDD7176D9FFC0D095EC0D09F8387BC89B757EFE4B3FEA7BE8ED2690C49505743
- tokenIdListingIndexTrader :2367603872205113601919641418006049524948892006677564292
- collectionPriceSide :5553706221857431545989690221492854496604484113330501939862357307
- makerFeeRecipientRate :73085940314428784406091487687239573883105985707455
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2784764014178867238037360817041637438462769691533336657
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2785139620099661280087339164043645523198821266196881489
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2785890831941249364187295858047661692670924415523971153
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2786266437862043406237274205049669777406975990187515985
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2786642043782837448287252552051677862143027564851060817
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
-
Address
- 0xb2ecfe4e4d61f8790bbb9de2d1259b9e2410cea5 (Blur.io: Marketplace 3)
Name
Execution721Packed (bytes32 orderHash, uint256 tokenIdListingIndexTrader, uint256 collectionPriceSide)View Source
Topics
- 0 0x1d5e12b51dee5e4d34434576c3fb99714a85f57b0fd546ada4b0bddd736d12b2
Data
- orderHash :845B518692EFE7B9E0DEEA5B05FCB89F182B90793731393EBACCD6FB914D6736
- tokenIdListingIndexTrader :2787391794122788201484291042370861315332111058245607505
- collectionPriceSide :5086025697911542612164511075023643930314585699578181939862357307
A transaction is a cryptographically signed instruction that changes the blockchain state. Block explorers track the details of all transactions in the network. Learn more about transactions in our Knowledge Base.